IAEA-140-OC
, Sea Weed (Fucus sp.) !Out of stock!

The common brown seaweed, Fucus sp., (IAEA-140/OC) was obtained from the coast of Normandy, France, through a local supplier. The Fucus sample was freeze-dried and then micronized to give a particle size of less than 40 μm. The powder was further homogenized by mixing in a stainless steel rotating drum for 2 weeks. After checking for the homogeneity of the sample material, aliquots of about 35 g were packed into glass bottles with Teflon lined screw caps and sealed with Teflon tape.

Recommended values (based on dry mass)

Pesticides and PCBs

Analyte

Unit

Value

95% Confidence Interval

N

β HCH

ng/g

4.6

2.4 - 9.5

8

pp’ DDE

ng/g

1.2

0.86 – 1.6

31

pp’ DDD

ng/g

0.72

0.61 – 0.90

24

pp’ DDT

ng/g

2.2

1.4 – 3.6

29

Dieldrin

ng/g

1.7

0.72 – 2.8

23

PCB No 28

ng/g

1.7

1.3 – 2.5

17

PCB No 31

ng/g

1.8

1.7 – 2.1

5

PCB No 49

ng/g

1.6

1.1 – 1.9

6

PCB No 52

ng/g

3.8

2.6 – 4.9

24

PCB No 101

ng/g

2.4

1.9 – 3.2

24

PCB No 105

ng/g

0.49

0.4 – 0.7

13

PCB No 118

ng/g

1.0

0.97 – 1.10

10

PCB No 138

ng/g

1.7

1.2 – 2.6

24

PCB No 149

ng/g

1.2

1.1 – 1.6

6

PCB No 153

ng/g

1.7

1.3 – 3.1

27

PCB No 156

ng/g

0.17

0.08 – 0.36

7

PCB No 180

ng/g

0.43

0.38 – 0.52

17

Petroleum Hydrocarbons

Analyte

Unit

Value

95% Confidence Interval

N

Total Aliphatics

ng/g

27000

25000 – 42000

9

n-C17

ng/g

890

300 – 1300

19

Pristane

ng/g

50

15 – 69

10

n-C18

ng/g

99

45 – 140

15

Phytane

ng/g

56

25 – 100

13

∑ n Alkanes (C14 – C34)

ng/g

11000

5600 - 2100

18

Phenanthrene

ng/g

76

40 – 110

28

2 Methyl Phenanthrene

ng/g

19

15 – 40

10

1 Methyl Phenanthrene

ng/g

11

9 - 14

11

Anthracene

ng/g

14

4 – 93

11

Chrysene

ng/g

40

25 – 49

27

Fluoranthene

ng/g

88

57 – 110

23

Pyrene

ng/g

67

46 – 79

24

Benzo (k) Fluoranthene

ng/g

19

15 – 27

8

Benz (a) Anthracene

ng/g

25

14 – 32

23

Benzo (e) Pyrene

ng/g

26

19 – 33

10

Benzo (a) Pyrene

ng/g

20

16 – 22

15

Naphthalene

ng/g

17

9 – 43

14

Benzo (ghi) Perylene

ng/g

20

17 – 35

15

Indeno (123cd) Pyrene

ng/g

33

20 – 53

10

(Value) Concentration calculated as a median of the accepted laboratory means
(N) Number of accepted laboratory means which are used to calculate the recommended or information values and their respective confidence intervals

Information values (based on dry mass)

Please note that information values are not to be used for any assessment of analytical performance or similar; they are included to provide information about the expected mass fractions/concentration levels

Chlorinated Pesticides

Analyte

Unit

Value

95% Confidence Interval

N

HCB

ng/g

1.3

0.35 – 3.3

30

α HCH

ng/g

1.4

1.3 – 1.5

9

ɣ HCH (Lindane)

ng/g

11

5.4 – 16

52

Heptachlor

ng/g

3

0.99 – 4.4

12

Heptachlor Epoxide

ng/g

0.79

0.32 – 1.4

8

Aldrin

ng/g

0.76

0.50 – 4.5

15

Endrin

ng/g

0.71

0.43 – 1.6

9

α Endosulfan

ng/g

0.9

0.58 – 4.4

14

α Chlordane

ng/g

1.4

0.36 – 2.8

8

Aroclor 1254

ng/g

25

12 – 41

23

Aroclor 1260

ng/g

12

1.9 – 13

14

PCB Congeners

Analyte

Unit

Value

95% Confidence Interval

N

PCB No 18

ng/g

1.5

1.2 – 1.9

4

PCB No 44

ng/g

2

1.9 – 2.1

4

PCB No 66

ng/g

0.89

0.65 – 1.1

4

PCB No 70

ng/g

1.8

1.1 – 4.0

4

PCB No 77

ng/g

0.19

0.04 – 6.9

4

PCB No 87

ng/g

1.6

1.2 – 2.0

4

PCB No 99

ng/g

0.9

0.75 – 1.4

4

PCB No 170

ng/g

0.21

0.16 – 0.76

7

PCB No 187

ng/g

0.38

0.3 – 1.2

4

Petroleum Hydrocarbons

Analyte

Unit

Value

95% Confidence Interval

N

UVF equivalent Chrysene

ng/g

3500

1200 – 5400

8

UVF equivalent ROPME oil

ng/g

29000

11000 – 39000

8

Resolved Aliphatics

ng/g

13000

6400 – 24000

16

Unresolved Aliphatics

ng/g

26000

12000 - 48000

8

Total Aromatics

ng/g

5800

750 - 16000

8

Resolved Aromatics

ng/g

350

150 - 500

8

Unresolved Aromatics

ng/g

8100

3900 – 17000

4

Fluorene

ng/g

6.5

4.6 - 1600

7

Benzo (b) Fluoranthene

ng/g

37

33 - 37

6

Perylene

ng/g

5

2.7 – 9.8

4

1 Methyl Naphthalene

ng/g

13

6.5 – 15

4

2 Methyl Naphthalene

ng/g

16

9 – 23

4

Dibenz (ah) Anthracene

ng/g

4.5

2.6 – 160

6

Acenaphthene

ng/g

3.4

3.3 – 7.0

3

(Value) Concentration calculated as a median of the accepted laboratory means
(N) Number of accepted laboratory means which are used to calculate the recommended or information values and their respective confidence intervals

The values listed above were established on the basis of statistically valid results submitted by laboratories which had participated in an international interlaboratory comparison organized by IAEA Marine Environment Laboratory, Monaco. The details concerning the criteria for qualification as a recommended or information value can be found in the respective report (attached).